Liquid cooled nonferrous permanent mold casting unit



Sept. 12, 1950 c. R. SHOCK mL 2,521,153

LIQUID COOLED OUS PERMANENT NONFERR MOLD CASTING UNIT Filed April 16,1948 4 Sheets-Sheet 1 5 ll'nl 4 Sheets-Sheet 2 {g INVEN o BY @213 6 mm,

4 Arrow/5r 4 Sept. 12, 1950 c. R. SHOOK ETAL LIQUID COOLED NONFERROUSPERMANENT MOLD CASTING UNIT Filed Apnl 16 1948 Fig. 2

Sept. 12, 1950 c. R. SHOOK ETAL 2,521,753

LIQUID COOLED NONFERROUS PERMANENT MOLD CASTING UNIT Filed April 16,1948 4 Sheets-Sheet 3 Patented Sept. 12, 1950 LIQUIn oooLEb'NoNFERRousPERMANENT Mo ncAsnNo UNIT Clarence R. Shook, Glenside,- and Philip B.

- Neisse'l', Lafayette Hill, Pa.

Application s, 1948, Serial No. 21,543

v 1 Claim. (01. 22 -77) (Gratin under the act of Mariel;- 3,1883, is

amended April 30, 1928; 370 "O. G. 757) The invention described hereinmay be manufactured and used by or for the Government of the UnitedStates for governmental purposes without the payment to us of anyroyalty thereon in accordance with the provisions of the act of April30, 1928 (ch. 460, 45 Stat. L. 467).

Our invention relates to a method and apparatus for casting by means ofwhich truly uniform cast ingots or the like may be automatically andcontinuously produced with controlled duo-- tility and grain sizetogether with avoidance of segregation, flaws and internal strains,which is particularly adapted for the continuous casting of high meltingpoint metals and alloys.

In the accompanying drawings which are illustrativ-e of a preferred formof our invention:

Figure 1 is an elevation of our apparatus.

Figure 2 is a perspective view of one of our two part'metal molds iningot discharging position, with the movable part shown in verticalcross section to show the construction.

Figure 3 is a diagrammatic representation of the cooling system.

Figure 4 is a side elevation of means for filling one of our molds withmolten metal, a mold being indicated by dotted lines.

Figure 5 is a cross section of Figure 4, with our volume control unit indischarging position.

In these drawings:

A turntable Ill supports our apparatus which includes a plurality ofidentical molds each formed of a relatively reciprocable section II anda relatively stationary section l2; each section is provided withsubstantially identical casting cavities I3 and I4, and the two sectionsare held in exact alignment by four parallel supporting rods i5 on whichthe section l is reciprocated from closed to open position by arevolvable cam It. The mold sections H and |2 are cored to provide acoolant receiving chamber |l, I8 through which flows temperatureregulated coolant from inlet pipes I!) and 2|! and outlet pipes 2| and22 to a spider 23 to a cooling heat exchanger 24, thence to a storagetank 25 from which it is withdrawn by a circulating pump 23. Anelectrically driven fan 21 directs cooling air against the heatexchanger 24. A thermostat 28 controls the motor of the fan 21. Coolantin the tank 25 is: initially brought to a predetermined operatingtemperature by a suitable heater 31!, which may be. a gas burner.

Each mold in succession is rotated with the turntable It to the castingposition where a tilting furnace 3| (Figure 1) pours molten metal into avolume control unit 32 having substantially the same capacity as that ofthe mold. The capacity of the volume control unit 32 is regulated byadjusting the depth of a channel 33 in a boss 34 (Figure 4) on a side ofthis unit. Any excess metal is discharged through this channel into asuitable spill box provided for that purpose. The volume control unit 32is supported on two trunnions 31 and 39 which seat consecutively intoopen bearings 33 and 38. As the rack 45 is raised by the pinion 44, thevolume control unit 32 is tilted on trunnion '31, until trunnion 3'9engages in bearing 38. This movement draws the volume control unit 32away from the furnace 3|, and thereby clears a pouring lip of thefurnace 3| as the volume control unit 32 is further tilted. When thetrunnion 39 engages in bearing 38, the weight of the volume control unit32 is transferred from the trunnion 31 to trunnion 39. A floating link40 accommodates the dual rotation and change of centers as the volumecontrol unit 3?. axis of rotation is changed. The volume control unit 32is filled to capacity from the furnace 3| and is then tilted by suitablemeans, such as a hand wheel 29, which rotates a pinion 44 in mesh with arack 45, to pour its contents into a teeming box 35 which feeds moltenmetal into a mold positioned immediately beneath. Whil the teeming box35 is being discharged, the volume control unit 32 is returned to theinitial position where it is refilled for the next casting operation.The rate of pour from the teeming box 35 depends upon the size andnumber of holes 45 drilled in the bottom of the teeming box 35.

The proper temperature of the molten metal in the volume control unit 32and the teeming box 35 is maintained by suitable gas burners, thistemperature varying with the alloy being worked.

4| indicates two of a set of four casters, or car Wheels, mounted inbrackets 47 on the under side of a supporting member 48 on which theturntable I0 is revolubly mounted. These casters travel on a suitabletrack 42 passing in front of a plurality of furnaces and serve tosupport the entire casting unit when moved from furnace to furnace. Thenumber of furnaces this casting unit will serve is determined by themelting cycle and the casting time.

43 indicates a collector ring by means of which the necessary electriccurrent is brought to: the revolvable casting unit for operating thenecessary motors.

While we have shown and described a preferred embodiment of ourinvention, changes may be 3 made in the construction and arrangementwithout departing from the spirit and scope of the invention asdisclosed herein.

What we claim is:

In a casting machine for receiving metal from 5 a plurality ofstationaryfurnaces, the combination comprising a support having on itsunder side wheels adapted to run on a track passing a radiator forremoving from the water the heat 15 introduced by its passage throughthe molds.

CLARENCE R. SHOOK. PI-DLIP B: NEISSER;

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name I Date 666,075 Vernon Jan. 15, 1901912,228 Bunau-Varilla Feb. 9, 1909 928,246 Cline July 20, 1909 1,021,543McKelvey Mar. 26, 1912 1,031,585 Rees et al. July 2, 1912 1,643,780 LeeSept. 27, 1927 1,894,982 Eppensteiner Jan. 24, 1933 1,909,773 Lewin May16, 1933 1,917,872 Campbell July 11, 1933 2,030,482 Summey Feb. 11, 19362,134,827

Huck Nov. 1, 1938

